Between bouts of eating this Thanksgiving weekend you might want to head outside and toss a football, shoot some hoops or kick a soccer ball around to get a little exercise. If the weather's nasty (or if you live in Buffalo) perhaps Ping Pong or a game of pool will do.
Atlas resembles humanoid robots we know from fiction, such as The Terminator. Valkyrie is one of only a handful of robots competing in the 2013 DARPA Robotics Challenge.
For the first time since accidents severed the neural connection between their brains and limbs, a small number of patients are reaching out and feeling the world with prosthetic devices wired directly to their brains. Earlier this month, scientists at the California Institute of Technology (Caltech) in Pasadena implanted a person's brain with electrode arrays that read neural activity to control a robotic arm and stimulate the brain to deliver a sensation of what the arm touched.
They look strangely alien, with barely recognisable features and bizarre bumps and lumps. Yet this is the way Facebook - and other computer recognition systems - see humans.